.top{
    background: black;
    line-height: 40px;
    text-align: right;
    font-size: 20px;
}
/*超链接设置*/
.top a {
    color: white;
}

.dht{
    line-height: 40px;
}

.left{
    width: 20%;/*宽度*/
    text-align: center;/*文字水平居中*/
    float: left;/*浮动*/
}
/*左侧图片样式*/
.left img{
    width: 38px;
    height: 38px;
}
/*左侧文字*/
.left span{
    vertical-align: 50%;
}
/*中间正文*/
    .center{
        width: 60%;
        float: left;
    }
    /*右侧广告标签*/
    .right{
        width: 20%;
        float: right;
    }

    /*底部超链接*/
    .footer{
        clear: both;/*清除浮动*/
        background: black;
        text-align: center;/*文字居中*/
    }
    .footer a{
        color: white;
    }
    a{
        text-decoration: none;
        color: black;
    }

    a:hover{
        color: red;
    }